In a counter-current exchange syste

In a counter-current exchange system, the blood vessels carrying cooled blood from the flippers run close enough to the blood vessels carrying warm blood from the body to pick up some heat from the warmer blood vessels; thus, the heat is transferred from the outgoing to the in-going vessels before it reaches the flipper itself.Q: Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information.A. In a turtle's counter-current exchange system, outgoing vessels lie near enough to in-going ones that heat can be exchanged from the former to the latter before reaching the turtle's flippers.B. Within the turtle's flippers, there is a counter-current exchange system that allows colder blood vessels to absorb heat from nearby warmer blood vessels and then return warmed blood to the turtle's body.C. In a counter-current exchange system, a turtle can pick up body heat from being close enough to other turtles, thus raising its blood temperature as it passes them.D. When a turtle places its flippers close to its body, it is able to use its counter-current exchange system to transfer heat from the warmer blood vessels in its body to the cooler blood vessels in its flippers.